Level Switch Displacer Chamber's Vent


Thread Starter


Hi all,

I'm still new here and wonder whether the topic above has been discussed or not. My doubt is, if a displacer type level switch is to be installed on a pressurized chamber, do we still need the vent connection as per shell std drawing s38.056-D? Basically, my understanding of the vent connection is purposely to create equal pressure so that we can easily drain the level inside the chamber for maintenance purpose. please shed some lights on my query. Thanks all.